#1
I'm learning the slide guitar. does anyone have any tips or techniques?

also, if you know any songs that are good learnin's on the slide. let me know
#3
Derek Trucks is an INCREDIBLE slide guitar player!! Anything from him is good, also anything from the Allman Bros. Can't really help you with technique stuff, sorry!
#4
dust my broom is a good one in standard tuning

most slide stuff is in open tunings, so just pick one that a band you like uses, find what key the song is in, and try and imitate their licks. (if you're learning anything by the allman brothers, it's probably in A)
#12
Gear Jammer by George Thorogood has a cool slide riff that's pretty easy to play. I think that was actually the first thing I learned with a slide.